StingRay™ Classic Hydrofoil Stabilizers made with SPEED-XP™. The #1 selling hydrofoil of all time continues to outperform all competition. With its ability to enhance performance in vitually any sized boat, the StingRay™ Classic is the most battle-tested product in its class. On plane in less time. Reduced bow rise. Eliminates chinewalking. Stops porpoising. Wipes out cavitation. Saves fuel. Aides in pulling skiers. StingRay™ Junior available for 2-1/2 to 40 HP.